STMicroelectronics STEVAL-CBL014V1

Overview

STEVAL-CBL014V1 from STMicroelectronics is an evaluation board implementing the LNBH26L dual LNB supply and control IC, designed for satellite TV reception systems. It delivers 8 programmable output voltage levels (13/18 V), integrated 22 kHz tone generation (±0.5% accuracy), DiSEqC™ 1.x compliance, I²C interface, and high-efficiency step-up DC-DC conversion (93% @ 0.5 A) with single 8–16 V input.

For engineers reviewing the STEVAL-CBL014V1 datasheet, STEVAL-CBL014V1 pinout, STEVAL-CBL014V1 application, or STEVAL-CBL014V1 equivalent, this board enables rapid validation of dual-LNB power sequencing, DiSEqC command transmission, 22 kHz tone integrity under no-load conditions, and thermal/overcurrent protection behavior in satellite receiver front-end designs.

Technical Context

The STEVAL-CBL014V1 implements a complete LNB power and control solution based on the LNBH26L IC, integrating a high-efficiency PWM step-up converter (with internal N-MOSFET), low-drop post-regulator, factory-trimmed 22 kHz tone generator, and DiSEqC™ 1.x encoder/decoder logic. It supports dual independent LNB channels via I²C-configurable voltage selection and tone injection.

Control is executed through TTL-compatible DSQIN pin for DiSEqC™ data encoding and I²C bus for configuration of output voltage level (8 options), current limit (via external resistor), and status readback (overload, overtemperature, short-circuit flags). No external crystal or timing components are required.

Key Specifications

Availability

STEVAL-CBL014V1 is available at Aetrix Electronics and suitable for satellite TV receiver development, multi-LNB antenna systems, and DiSEqC™-enabled set-top box qualification requiring stable component supply and reference design validation.

Supply support for STEVAL-CBL014V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, analog ICs, power management devices, and sensors for industrial, automotive, and consumer applications.

The STEVAL-CBL014V1 belongs to ST's satellite receiver evaluation platform family, engineered to accelerate time-to-market for DiSEqC™-compliant front-end designs by providing fully validated hardware, schematics, and firmware examples.

FAQ

What is the primary function of the STEVAL-CBL014V1 evaluation board?

The STEVAL-CBL014V1 is a ready-to-use evaluation platform for the LNBH26L dual LNB supply and control IC. It provides full hardware implementation of DiSEqC™ 1.x-compliant power delivery, 22 kHz tone generation, and I²C-based configuration for satellite LNB modules-enabling immediate testing of dual-tuner satellite receiver functionality without custom PCB design.

Does the board support both 13 V and 18 V LNB output simultaneously?

No. The STEVAL-CBL014V1 implements a single-output LNBH26L-based design that delivers one programmable output voltage (13 V or 18 V, selectable among 8 levels via I²C). Dual-LNB operation requires two independent LNBH26L channels-this board validates one channel; dual-channel systems require two boards or a custom dual-channel layout using the same IC.

Can the 22 kHz tone be disabled or gated independently of the DC output?

Yes. The 22 kHz tone generator is controlled separately from the DC output enable function. The DSQIN pin accepts TTL-level DiSEqC™ data pulses to modulate the tone, while the output voltage remains active. Tone can be suppressed by holding DSQIN low or disabling DiSEqC™ mode via I²C register configuration, preserving DC bias to the LNB during non-switching operation.

Is external firmware or host controller required to operate the board?

Basic operation (fixed 13/18 V output + continuous 22 kHz tone) works standalone using jumpers. Full functionality-including DiSEqC™ command transmission, voltage level selection, and fault readback-requires an I²C host controller (e.g., MCU or PC-based adapter) to write to LNBH26L registers. Example firmware and register maps are provided in ST's AN4472 application note.